Malaysian Applied Biology Journal

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48_03_03

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Malays. Appl. Biol. (2019) 48(3): 19–26

 

POLLEN MORPHOLOGY AND HARMOMEGATHIC

CHARACTERS OF Byttneria LÖFL. SPECIES

(STERCULIACEAE S. S: SUBFAM. BYTTNERIOIDEAE)


AMIRUL-AIMAN, A.J.1,2, NORAINI, T.1*, NURUL-AINI, C.A.C.3, CHUNG, R.C.K.4, PHUPUMIRAT, W.5,

RUZI, A.R.1, BUNAWAN, H.6, IDRIS, S.7 and SUHANIZA, R.7


1School of Environmental Science and Natural Resources, Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

2Department of Environmental Sciences, Faculty of Environmental Studies,

Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

3Department of Plant Science, Kuliyyah of Science, International Islamic University Malaysia,

Bandar Indera Mahkota, 25200 Kuantan, Pahang, Malaysia

4Forest Research Institute Malaysia (FRIM), 52109 Kepong, Selangor, Malaysia

5Department of Applied Science, Faculty of Science, Prince of Songkla University,

P.O. Box 3, Hat Yai, 90112 Thailand

6Institute of Systems Biology, Universiti Kebangsaan Malaysia,

43600 UKM Bangi, Selangor, Malaysia

7Scanning Electron Microscopy Unit, Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

*E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Accepted 7 June 2019, Published online 30 June 2019


ABSTRACT

A palynological study was conducted on seven species of Byttneria Löfl. The objectives of this study was to understand the variation in micromorphological and harmomegarthic characteristics of pollen in Byttneria species in Malaysia and Singapore. In doing so, more information on the species of Sterculiaceae s.s family can be added. Dried pollen samples of seven Byttneria species were selected in this study, namely B. scabrida Ridl., B. pilosa Roxb., B. elliptica Pohl, B. curtisii Oliv., B. reinwardtii Korth., B. maingayi Mast. and B. jackiana Wall. Methods involved were acetolysis techniques, single-grain technique, and observation under light microscope and scanning electron microscope. Common characters shared by all studied species were porate pollen class, triporate aperture, and triangular outline. Variation in pollen characteristics includes ratio of exine thickness, pollen size, pore width and height, amb; shape and measurements. These characters are valuable in assisting identification of taxa group that can be used to differentiate between species in the genus. This study proved that pollen morphological characteristics of Byttneria have taxonomic values in identification and differentiation of species in subfamily Byttnerioideae and Sterculiaceae s. s.

Key words: Palynology, pollen micromorphology, Byttneria, Byttnerioideae, Sterculiaceae

 

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